Antiskid device for tires.



AAAAAAAAAAAAAAAAA 13.21. 1910.

979, 1 59 Patented DSC. 20, 1910.

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' P. T. HAMM.

ANTISKID DEVICE FORTIRES. APPLICATION FILED 11913.21, 1910.

Patented Dec. 20, 1910.I

2 SHEETS-SHEET Z4 I Ifzvcnior Phillip Tlfn/nm wiinees .filial/naysriirns ramena onirica..

IEil T. HAMM, OF NEWYORK, N. Y., ASSIGNOR T0 ATLAS CHAIN COMPANY, OF NZWYORK, N. Y., A CORPORATION' OF NEVI YORK.

ANTISKID DEVICE FCR TIRES.

Specification of Letters Patent.

Yatented Dec. 24), 1910.

Application filed February 21, 1910.a Serial No. 545,024.

To all whom it may concern:

'slipping and skidding of the tires on the The object 'of my inventionis to furnish animproved cross member'tor the tread,I consisting oflinks that can-be simply and cheaply made from sheet metal blanks andcomprising integral. means for flexibly connecting the linkstogether andhaving its tread surface .suitably supported to provide holdingmeansfonthe road and suitably reinforced against crushing.v

In the drawingsaccompanying this speciticatiom my 'invention i'sillustrated in its 1preferredembodiment wherein-li`igure1 is a sectionof'a portion -of-atire showing the chain in'positioiithereon and undercompression Ai'romthe weight' of the machine. Fig. 2 is a plan view otasection otiny device showing` the side chains and two oit the crossmembers. Fig. 3 shows a blank made troml a piece loi sheet metal fromwhich each -link lformed.' Fig. d .isalplan view show- Y the link withthe end eyes opened. Fig.

5 shows the link with the side edges bent up.

, Fig. t5 shows the-link with 'the tiatV ends bent over jso. that'theedges of the sides are in engagement and bringing the two portions ottheejye members together. Fig 7 -is a view ot two of the links, one ofwhich has its eye portions closed abontthe engaged portion of the otherlink. Fig 8 is a section on line nant-Fig.. 6-'and'll`ig-.-9 illustrates-a modification ofthe eye portion of my improved link'.A

in Figs. 1 and .2- my' improved chain asvillustrated 'includes side'members 1 :and 2:

whichl maybe of ordinary chai-n construction. Cross'members C liebetween said sideV members and are-connected thereto by suit-Y able'links 215120.' Each cross member C is made .up ofa plurality. of links,tivebeing shown in the present embodiment; of thesev links is formedfrom a blank as shownv in Fig. 3, comprising two fiat portions EachV 3and 4- connected by a narrower portion 5 and at the outer ends ofportions 3 and si are eye portions 7 and 8 respectively, havingelongated transverse eyes of the same size and shape. To enable theassembly of said eyes into the bended portion of the link they aredivided at their middle portions into two parts as 72 and 73 as to eye 7and 82 and 83 as to eye 8. Opposite sides of fiat portions of 3 and iare next bent to form vlips or supports 9 and 10 as to portion 3 and 11and 12 as to portion 4. The split eye portions are also bent upwardly tosome extent so that in the later bending said eye portions Will belbrought together face to face. The partly bent blank is now folded atits narrower portion 5 (Fig. 6) and portions 9 and 11 and portions 10and 12 respectively, brought together edge vto edge thus bringing fiatportions 3 and i into parallelism, but offsett'rom each other. The spliteyes also come together face to face in register as illustrated. l

To assemble the links the eye forming portions 13 and 14 (Fig. 6) arebrought adjacent to opposite .sides respectively of the open loop 5X ofanother' link and the portions 13 and 1li 'are' forced inwardly to bringtheir'ends' together whereby the portion 5X .is inclosed with-in the nowrestored eye as shown in Fig. 7.' The'adjacent links are thusarticulated by integral means. At one -end of chain C (Fig. 2),.anelo'ngated link -of the link. Narrow portion 5X of the connectinglink is so bent as to present. its connecting portion with the adjacentlink in the offset plane of members 7.x, 8X. Said offsetting of theseconnecting portions serve as .a

i protection against abrasion in use. 1

Y I thus provide a cross member-com risin asdmany of my improved linksasdie said inks having a largee'ngaging surface, strongly supported bytheir bent engaging edges thereby fnrnishingV resistance against sire ,l

chaud plies a niaiiinium amount of vgripping snrface with a minimumamount oi' weight l Each link member is integral, of great rigidity,simple in construction and can be readily and economically made.

l claim:

l. In an anti-skid device for tires, a link formed from an integralblank, and coin prisi ing two offset parallel portions connected 'by abent portion, the parallel portions having j their side edges bent intoengagement to sup port such portions oli'sct. 2. In an anti-skid devicefor lircs, a link f collapse. The hollow box construction sup- II formedfrom an integral blank, and coni prising two ollsct parallel portionsconnected by i l i a bent portion, the parallel portions having ltheir'side 'edges bent intoengagenient to snpportsnch portions offset, thelinks lniving, integral articulating portions.

ln an anti-'kid device ior tires.

a link formed from an integral blanlgand compris- 4 ing two 4olt'setparallel portions conn ected'by a bent portion, theparallelportions'having, their side edges bent into engagement tosupport such portions otlset, and eye portions at the opposite end ofythe members from the., said bent portions through which passes. thebent portion of the adjacent link.

4. .In an vantiekid device .foi-Nr.iles,A aflink formed from an integralblank, and ooinprisparallel portionsconnected by bentv portion,` theparallel' portions .having y their side edges bentinto engagementto'su'ptions at the opposite end of the members from the said bentportions-through which passes the bent portion of the adjacent link.

5. ln an anti-skid device for tires, a .link formed from an integralblank, and comprisl portsuch portions offset, and double eye por' j l ll ing two offset parallel portions connectedby offset from the outerfaces of the parallel.-

portions.

(3. ln. an anti-skid device for tires, a link formed from an integralblank, and comprising` two oifset parallel portions connected by a bentnarrower portion, the parallel portions having their side edges bentinto engagement to support such parallel portions ott'set, and eyeportions at the opposite end oi the members from the said bent vportionsthrough which passes the bent portion of the adjacent link, the eyeportions being divided to be opened and. closed for connection with thesaid-bent portions kof the links.

7. ln anl antiskid ldevice for tires, a link t'ornied from anintegral-blank, and comprising two odset parallel portions connected bya bent narrower portion, the parallel portions having their side edgesbent .into engagement' to support: such parallel portions oil'set, eachsaid parallel portion having an eye portion at the opposite end tronithe said bent portions through-which passes the bent portion oftheadjacent link, the eye portions being contiguous and offset from theparallel portions.

'Signedthis eighteenth day of February, nineteen hundred and ten (1910)in the Alta'rk Row Building, New ,Yorin N. Y., -be fore tivo subscribingWitnesses. PHILP T. HAMM.

lVitnesses: y

' Mannion H. Common.' y .Reimer N. EVANS. i

